US4149587A - Torsion bar seal activating means - Google Patents

Torsion bar seal activating means Download PDF

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Publication number
US4149587A
US4149587A US05/902,643 US90264378A US4149587A US 4149587 A US4149587 A US 4149587A US 90264378 A US90264378 A US 90264378A US 4149587 A US4149587 A US 4149587A
Authority
US
United States
Prior art keywords
rotor
torsion bar
heat exchange
rotary regenerative
exchange apparatus
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US05/902,643
Other languages
English (en)
Inventor
Richard F. Stockman
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alstom Power Inc
Original Assignee
Air Preheater Co Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Air Preheater Co Inc filed Critical Air Preheater Co Inc
Priority to US05/902,643 priority Critical patent/US4149587A/en
Priority to CA323,185A priority patent/CA1089440A/fr
Application granted granted Critical
Publication of US4149587A publication Critical patent/US4149587A/en
Priority to BR7902532A priority patent/BR7902532A/pt
Priority to JP5258279A priority patent/JPS54146056A/ja
Priority to FR7911156A priority patent/FR2425045A1/fr
Priority to OA56803A priority patent/OA06251A/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D19/00—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium
    • F28D19/04—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium using rigid bodies, e.g. mounted on a movable carrier
    • F28D19/047—Sealing means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S165/00—Heat exchange
    • Y10S165/009—Heat exchange having a solid heat storage mass for absorbing heat from one fluid and releasing it to another, i.e. regenerator
    • Y10S165/013—Movable heat storage mass with enclosure
    • Y10S165/016—Rotary storage mass
    • Y10S165/02—Seal and seal-engaging surface are relatively movable
    • Y10S165/021—Seal engaging a face of cylindrical heat storage mass

Definitions

  • the present invention relates to a rotary regenerative air preheater that includes a cylindrical rotor having a series of adjacent sector-shaped compartments that are mounted radially outward from a central rotor post.
  • a rotor housing that surrounds the rotor is provided with spaced ducts for the axial flow of a heating fluid and of a fluid to be heated.
  • This invention therefore provides for a specific seal biasing means for a rotary regenerative air preheater in which radial sealing means thereof are biased by an arrangement of torsion type springs that retain their effectiveness in various operational attitudes.
  • the sealing means including the biasing arrangement therefor normally remains in an extended position until contact between relatively movable surfaces is made, whereupon a rubbing shoe forces the torsion bar to rotate so as to place a tension upon the bar, thus causing the seal to be biased axially in a manner that accommodates a differential of thermal expansion therebetween.
  • FIG. 1 is a side elevation of a rotary regenerative preheater, partially broken away,
  • FIG. 2 is a cross-section of the seal and seal biasing means before contact with a seal actuator
  • FIG. 3 is a cross-section of the seal and seal biasing means after contact with a seal actuator
  • FIG. 4 is an enlarged view of the torsion bar seal shown in FIG. 1,
  • FIG. 5 is an enlarged view in cross-section of a radial seal and clip attached thereto
  • FIG. 6 is an enlarged view of the stop for limiting axial movement of the radial seal.
  • a housing 24 encloses the rotor 10 and is provided at opposite ends thereof with end or sector plates 26 which include spaced apertures 28 and 32 through which the air and the gas are directed.
  • end or sector plates 26 which include spaced apertures 28 and 32 through which the air and the gas are directed.
  • a radial slot 36 is first formed between radial support member 38 and a back-up plate 42, both of which are secured to the partition 12 by bolts 44.
  • the slot 36 is formed of predetermined thickness by a shim 46 between plates 38 and 42 whereby the radial sealing member 48 of somewhat less thickness may be freely moved while it is provided with adequate lateral support.
  • the back-up plate 42 is provided with a slot 52 through which one end of a clip 54 extends to serve as an actuator for the seal member 48.
  • the clip 54 is rigidly secured to the sealing member 48 whereby vertical movement of the clip will produce a similar movement of the seal.
  • a pin 55 is secured to the clip 54 and adapted to extend perpendicularly therefrom a sufficient distance to engage opening 56 in adjacent actuator 58 for rocker actuator 60 and aligned opening 62 in the lever 63.
  • the aligned openings in lever 63 and in the actuator 58 for the rocker 60 are elongated along a plane normal to movement of the sealing leaf 48 thereby permitting (vertical) movement of seal 48 and attached pin 55, while lever 63 and rocker 60 move circumferentially about the end of a torsion bar 66.
  • the seal 48 is moved in an axial direction while torsion bar 66 has one end thereof attached to a bracket 64 which is in turn fixed to the diaphragm or other rotor structure.
  • the torsion bar 66 extends loosely through an opening 70 in a bracket 68 which is similar to bracket 64 and also carried by the rotor.
  • the end of the torsion bar 66 lying adjacent the bracket 68 is attached to lever 63 which is pivotally linked to pin 55 by slot 62 whereby vertical movement of lever arm 63 will similarly move pin 55 and radial seal 48.
  • lever 63 which is pivotally linked to pin 55 by slot 62 whereby vertical movement of lever arm 63 will similarly move pin 55 and radial seal 48.
  • the radial sealing means 48 is thus adapted to rub against the plane under surface of sector plates 26.
  • the rocker members 60 are attached to the torsion bar 66 and adapted to first come in contact with the underside of the sector plate 26 thereby actuating the sealing members 48 up or down the same distance as the rocker 60 is moved arcuately by the force exerted upon pin 55.
  • torsion bar 66 When the rotor is rotated so that a diaphragm and adjacent sealing means are moved out of contact with the face of an adjacent sector plate, the turning effect on torsion bar 66 will not be limited by the rocker 60 sliding in contact with the sector plate 26. Therefore the torsion bar will exert a turning force sufficient to move the lever arm 63 upward until stopped by the hooked end 72 on lever 63 moving into contact with stop means 74 on bracket 68.
  • rocker 60 may be provided with a plastic coating, carbon inserts, or other means to reduce the frictional resistance therebetween.
  • all materials used may be selected to best perform their assigned functions, and the apparatus may be otherwise modified to provide several actuators where only one is shown, or apparatus of a different size or shape, so long as they cooperate in the manner shown. It is thus to be understood that various changes may be made in the details of construction without departing from the spirit of the invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Air Supply (AREA)
US05/902,643 1978-05-04 1978-05-04 Torsion bar seal activating means Expired - Lifetime US4149587A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US05/902,643 US4149587A (en) 1978-05-04 1978-05-04 Torsion bar seal activating means
CA323,185A CA1089440A (fr) 1978-05-04 1979-03-12 Commande pour volet a bras de torsion
BR7902532A BR7902532A (pt) 1978-05-04 1979-04-25 Aparelho trocador de calor
JP5258279A JPS54146056A (en) 1978-05-04 1979-05-01 Rotary heat accumulating system heat exchanging device
FR7911156A FR2425045A1 (fr) 1978-05-04 1979-05-03 Echangeur de chaleur tournant a regeneration
OA56803A OA06251A (fr) 1978-05-04 1979-05-04 Echangeur de chaleur tournant à régénérateur.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/902,643 US4149587A (en) 1978-05-04 1978-05-04 Torsion bar seal activating means

Publications (1)

Publication Number Publication Date
US4149587A true US4149587A (en) 1979-04-17

Family

ID=25416160

Family Applications (1)

Application Number Title Priority Date Filing Date
US05/902,643 Expired - Lifetime US4149587A (en) 1978-05-04 1978-05-04 Torsion bar seal activating means

Country Status (6)

Country Link
US (1) US4149587A (fr)
JP (1) JPS54146056A (fr)
BR (1) BR7902532A (fr)
CA (1) CA1089440A (fr)
FR (1) FR2425045A1 (fr)
OA (1) OA06251A (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5029632A (en) * 1990-10-22 1991-07-09 The Babcock & Wilcox Company Air heater with automatic sealing
US5063993A (en) * 1990-10-22 1991-11-12 The Babcock & Wilcox Company Air heater with automatic sealing
US5363906A (en) * 1990-05-11 1994-11-15 Borowy William J Air heater seals
US5727617A (en) * 1996-12-27 1998-03-17 Abb Air Preheater, Inc. Plate stabilizer assembly for rotary regenerative air preheaters
US20030197333A1 (en) * 2002-04-18 2003-10-23 Alstom (Switzerland) Ltd Air preheater sector plate bypass seal
US10295273B2 (en) * 2015-08-18 2019-05-21 Arvos Ljungstrom Llc Flexible seal for a rotary regenerative preheater
US11333446B2 (en) 2015-08-18 2022-05-17 Arvos Ljungstrom Llc Flexible seal for a rotary regenerative preheater

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2202073C2 (ru) * 2001-06-13 2003-04-10 Южно-Российский государственный технический университет (Новочеркасский политехнический институт) Регенеративный вращающийся теплообменный аппарат

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2681208A (en) * 1947-12-30 1954-06-15 Jarvis C Marble Sealing means for rotary air preheaters
US2874939A (en) * 1956-12-20 1959-02-24 Air Preheater Radial seal for rotary heat exchanger

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR978264A (fr) * 1947-12-30 1951-04-11 Ljungstroms Angturbin Ab Obturateur pour réchauffeurs d'air
US2650074A (en) * 1950-10-12 1953-08-25 Air Preheater Spring or gravity biased radial seal
US3166119A (en) * 1961-04-13 1965-01-19 Combustion Eng Radial seal for rotary regenerative heat exchanger

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2681208A (en) * 1947-12-30 1954-06-15 Jarvis C Marble Sealing means for rotary air preheaters
US2874939A (en) * 1956-12-20 1959-02-24 Air Preheater Radial seal for rotary heat exchanger

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5363906A (en) * 1990-05-11 1994-11-15 Borowy William J Air heater seals
US5529113A (en) * 1990-05-11 1996-06-25 Borowy; William J. Air heater seals
US5029632A (en) * 1990-10-22 1991-07-09 The Babcock & Wilcox Company Air heater with automatic sealing
US5063993A (en) * 1990-10-22 1991-11-12 The Babcock & Wilcox Company Air heater with automatic sealing
US5727617A (en) * 1996-12-27 1998-03-17 Abb Air Preheater, Inc. Plate stabilizer assembly for rotary regenerative air preheaters
US20030197333A1 (en) * 2002-04-18 2003-10-23 Alstom (Switzerland) Ltd Air preheater sector plate bypass seal
US10295273B2 (en) * 2015-08-18 2019-05-21 Arvos Ljungstrom Llc Flexible seal for a rotary regenerative preheater
US11333446B2 (en) 2015-08-18 2022-05-17 Arvos Ljungstrom Llc Flexible seal for a rotary regenerative preheater

Also Published As

Publication number Publication date
FR2425045A1 (fr) 1979-11-30
JPS54146056A (en) 1979-11-14
BR7902532A (pt) 1979-11-27
CA1089440A (fr) 1980-11-11
OA06251A (fr) 1981-06-30

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